EP1479593A1 - Modulierbare Kraftfahrzeug-Lenksäulen-Energieabsorptionseinrichtung mit pyrotechnischer Auslösung - Google Patents

Modulierbare Kraftfahrzeug-Lenksäulen-Energieabsorptionseinrichtung mit pyrotechnischer Auslösung Download PDF

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Publication number
EP1479593A1
EP1479593A1 EP04291130A EP04291130A EP1479593A1 EP 1479593 A1 EP1479593 A1 EP 1479593A1 EP 04291130 A EP04291130 A EP 04291130A EP 04291130 A EP04291130 A EP 04291130A EP 1479593 A1 EP1479593 A1 EP 1479593A1
Authority
EP
European Patent Office
Prior art keywords
absorption
support element
fixed support
energy absorption
fixed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP04291130A
Other languages
English (en)
French (fr)
Other versions
EP1479593B1 (de
Inventor
Jean-Marc Gatti
Gerald Giboureau
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch Automotive Steering Vendome SAS
Original Assignee
Nacam France SAS
Nacam SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=33041996&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1479593(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Nacam France SAS, Nacam SA filed Critical Nacam France SAS
Publication of EP1479593A1 publication Critical patent/EP1479593A1/de
Application granted granted Critical
Publication of EP1479593B1 publication Critical patent/EP1479593B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
    • B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
    • B62D1/16—Steering columns
    • B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
    • B62D1/19—Steering columns yieldable or adjustable, e.g. tiltable incorporating energy-absorbing arrangements, e.g. by being yieldable or collapsible
    • B62D1/195—Yieldable supports for the steering column
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • F16F7/12—Vibration-dampers; Shock-absorbers using plastic deformation of members
    • F16F7/123—Deformation involving a bending action, e.g. strap moving through multiple rollers, folding of members

Definitions

  • the present invention relates to a modular energy absorption device for motor vehicle steering column, this absorption device acts directly according to the direction of the shock and implements one or more charges fireworks.
  • the device according to the invention applies in particular to a steering column adjustable in depth or tilt or to a column of steering adjustable in depth and tilt, the steering shaft of which is mounted in a body tube, which is supported and blocked on the body at the desired position.
  • the steering column includes a steering shaft mounted to rotate in a tube-body, which is connected to a fixed support assembly to the vehicle chassis or to an element of the body.
  • the invention can also be applied to a non-adjustable steering column; in that case, the body tube is mounted directly in the assembly support.
  • the objective of the present invention is to provide a modular absorption device of energy, which acts directly in the direction of the shock and which implements absorption elements energy simple and easy to carry out, while allowing to absorb in a quantified way all or part of the energy to be dissipated which is required and which takes into account the characteristics of the driver and the vehicle, while easily mounting in the size of the existing steering columns.
  • the invention relates to a modular energy absorption device of a motor vehicle steering column, which comprises a steering shaft mounted to rotate in a body tube around a steering axis .
  • the body tube is connected to a support assembly which is fixed to the vehicle chassis.
  • a fixed support element is secured to the chassis of the vehicle, and a mobile support element is connected to the fixed support element in order to constitute the support assembly.
  • the mobile support element is connected and blocked on the fixed support element at a determined value so that this blocking ceases in the event of an impact and so that the absorption device comes into action.
  • the absorption device further comprises at least one energy absorption assembly which has at least two absorption elements of determined length and section. Each absorption element includes a first end portion, a central portion and a second end portion.
  • the first end portion of the absorption element is connected to the mobile support element by a retaining rod.
  • the central portion of absorption element is of elongated shape substantially in the direction of the force to be absorbed, and is folded back on itself with a curvature determined around an axis substantially perpendicular to the direction of the force to be absorbed. cushion.
  • the second end portion is connected to the fixed support element by a holding rod. At least one of the holding rods is movable along its axis by means of pyrotechnic displacement means which are actuated by control means.
  • the mobile support element is connected to the fixed support element by a desired number of absorption elements so that the mobile support element connected to the body-tube, and therefore at the wheel, moves relative to the fixed support element while absorbing all or part of the energy to be dissipated required.
  • the central portion of the element or of each absorption element is a strip of rectangular or square section, which is arranged between a bearing face of the fixed support element and a bearing face of the element. mobile support.
  • the length and section of the central portion have values determined by the amount of energy to be absorbed.
  • the strip can be of the constant section type or varies uniformly or in stages.
  • the first end portion of one of the two absorption elements forms a single base with the first end portion of the other element.
  • the base includes at least one hole receiving a fixing element on the mobile support element.
  • the first end portions of the three absorption elements form a single base.
  • Said base includes at least one hole receiving a fixing element on the mobile support element.
  • the fixed support element comprises a plate which is fixed on one side against the structure of the vehicle, and which carries on the other side two uprights substantially parallel to the vertical plane passing through the steering axis.
  • the mobile support element comprises two uprights substantially parallel to the vertical plane and a connection element. The two uprights engage and slide in the event of an impact in the two uprights of the fixed support element.
  • the connection element is located on the side of the fixed support element, and at a certain distance from the plate of the fixed support element to allow housing of the energy absorption assembly between the support face of the fixed support element and the support face of the mobile support element.
  • Said bearing faces face each other and are substantially parallel to each other, and substantially perpendicular to the vertical plane of the steering axis.
  • the absorption assembly comprises three absorption elements, each first end of which is connected to a common base provided with two holes, each receiving a fixing element in a corresponding hole made in the connection element.
  • the second end of the central absorption element has a hole for the passage of a movable retaining rod along its axis and belonging to a pyrotechnic actuator.
  • the second end of each lateral absorption element has a hole for the passage of a fixed holding rod.
  • Each fixed holding rod is constituted by a fixing element in a corresponding hole made in the fixed support element.
  • the through hole of the movable holding rod belonging to a pyrotechnic actuator has a circular part adjusted with the movable holding rod. The circular part is extended in the sliding direction by a narrower oblong hole intended to receive a throttle formed in the movable holding rod to ensure the locking of its position in the event of impact.
  • the modular energy absorption device according to the invention thus has the advantage of having a simple structure to carry out, with a guarantee of manufacturing quality when performed in very large series, as in the industry automobile.
  • the device adapts easily to the size of the steering columns existing.
  • the absorption device modular energy allows to adapt the absorption of energy to all or part of that requested, in taking into account in particular the weight of the driver, and its position in relation to the steering wheel, the seat belt safety and vehicle speed while preserving the same unwinding race.
  • the motor vehicle steering column includes a steering shaft 1 which is mounted rotating in a tube-body 2 around a steering axis 3.
  • the tube-body 2 is connected to a support assembly 6 by a adjustment system in depth position or tilt, or by an adjustment system in depth and tilt.
  • the invention can also apply to a steering column not adjustment, in this case the tube-body 2 is connected directly to the support assembly 6.
  • the support assembly 6 comprises a fixed support element 8 and a mobile support element 9.
  • the fixed support element 8 is integral with the chassis 10 of the vehicle or with a bodywork element.
  • the mobile support element 9 is connected to the body tube 2 by the position adjustment system.
  • the movable support element 9 is connected to the fixed support element 8, and said mobile support element 9 is blocked on said fixed support element at a determined value, which takes account of the shock to be absorbed in order in this case to allow the movable support element 9 to slide in the fixed support element 8.
  • the vertical plane passing through the steering axis 3 is referenced 4. In the following description and for the same element, we will call internal or internal with respect to the steering axis 3, which is closest to this steering axis 3, and external or external which is the most distant of said axis.
  • the mobile support element 9 is connected and blocked on the fixed support element 8 at a determined value so that this blocking ceases in the event of an impact, and that the modular energy absorption device of the invention comes into action.
  • the fixed support element 8 comprises a plate 13 which is fixed on one side 15 against the structure of the vehicle 10, and which carries on the other side 14 two uprights 11 and 12 substantially parallel to the vertical plane 4 passing through the axis 3.
  • the side 14 is the lower bearing face of the plate 13 and the side 15 is the upper bearing face of the plate 13.
  • the absorption assembly 50 comprises three absorption elements: a central absorption element 51 and two lateral absorption elements 52 and 53.
  • the mobile support element 9 comprises two uprights 21 and 22 substantially parallel to the vertical plane 4 and a connecting element 23.
  • the two uprights 21 and 22 engage and slide in the event of an impact in the two uprights 11 and 12 of the fixed support element 8.
  • the connection element 23 is located on the side of the plate 13 of the fixed support element 8.
  • the connection element 23 is disposed at a certain distance from the plate 13 of the fixed support element 8 to allow the energy absorption assembly 50 to be housed between the support face 14 of the fixed support element 8 and the support face 25 of the mobile support element 9.
  • the energy absorption assembly comprises at least one absorption element 30 of determined length and section.
  • the absorption element 30 comprises a first end portion 31, a central portion 35, 39 and a second end portion 32.
  • the central portion 35, 39 of the absorption element 30 is of elongated shape according to an axis which has substantially the same direction as the force to be absorbed.
  • the first end portion 31 of the absorption element 30 is connected to the mobile support element 9 by a retaining rod 72.
  • the second end portion 32 of the absorption element 30 is connected to the fixed support element 8 by a retaining rod 71.
  • the absorption element 30 is folded back on itself around an axis substantially perpendicular to the direction of the force to be absorbed, with at the level of the fold, a determined radius of curvature.
  • the absorption element 30 is arranged between the support face 14 of the fixed support element 8 and the support face 25 of the mobile support element 9 so that there is no relative friction, during shock. There is therefore no friction between the absorption element 30 and the support face 14 of the fixed support element 8 and between the absorption element 30 and the support face 25 of the mobile support element 9.
  • the absorption element 30 always remains linked to the fixed support element 8 and to the mobile support element 30 during the impact.
  • One of the holding rods is a movable holding rod 71 along its axis. This is done by means of pyrotechnic displacement means which are actuated by control means.
  • the mobile support element 9 is connected to the fixed support element 8 by a desired number of absorption elements 30, so that the mobile support element 9 connected to the tube-body 2 so the flywheel moves relative to the fixed support element 8 by absorbing all or part of the energy to be dissipated requested.
  • the central portion of the element or of each absorption element is a strip of rectangular or square section. The strip is disposed between the support face 14 of the fixed support element 8 and the support face 25 of the mobile support element 9. Thus, there is no relative friction between the external face with respect to the folding of said strip and each of said bearing faces 14 and 15 during the impact.
  • the length and section of the central portion or slat have values determined by the amount of energy to be absorbed.
  • the absorption assembly 30 includes a single absorption element 30 which has a first end portion 31 and a second end portion 32.
  • the first end portion 31 has two holes 33 for the passage of a fixed retaining rod, that is to say of a fixing element or fixing screw 72 in holes 26 of the mobile support element 9.
  • the second end portion 32 has a through hole 34 of a movable holding rod 71 set in motion by the pyrotechnic actuator.
  • certain absorption elements may have a second end portion 32 with a fixed retaining rod and a through hole 34.
  • the strip 35 has a constant section from the first end portion 31.
  • the variation of the resisting force F as a function of the stroke C is shown in FIG. 5A, which after an initial rise stabilizes.
  • the strip 36 has a section varying uniformly, increasing from the first end portion 31.
  • the variation in the resisting force F as a function of the stroke C is shown in FIG. 6A, which after an initial climb increases.
  • the strip 37 has a section varying uniformly, decreasing from the first end portion 31.
  • the variation in the resisting force F as a function of the stroke C is shown in FIG. 7A, which after an initial climb decreases.
  • the lamella 38 has a section varying in stages with a first bearing of larger section from the first end portion 31.
  • the variation of the resistant force F as a function of the stroke C is shown in FIG. 8A, which after an initial climb stabilizes at a first level, then at a second weaker level.
  • the lamella 39 has a section varying in stages with a first landing of smaller section from the first end portion 31.
  • the variation of the resistant force F as a function of the stroke C is shown in Figure 9A, which after an initial climb stabilizes at a first level, then at a second stronger level.
  • the absorption assembly referenced 40 comprises two absorption elements 41 and 42, the first end portion 31 of the first element 41 of which forms a single base 43 with the first portion end 31 of the second element 42.
  • the base 43 has two holes 33 receiving a fixed holding element or fixing screw 72 on the mobile support element 9.
  • Each of the absorption elements 41 and 42 has a second end portion 32, which has a through hole 34 of a movable holding rod 71.
  • the absorption assembly referenced 60 comprises three absorption elements 61, 62 and 63.
  • the first three end portions 31 of the elements 61, 62 and 63 form a single base 64.
  • the base 64 comprises two holes 33 receiving a holding element or fixing screw 72 on the mobile support element 9.
  • Each of the absorption elements 61, 62 and 63 has a second end portion 32.
  • the central element 61 has a second end portion 32 which has a through hole 33 of a fixed holding rod or screw fixing 72.
  • Each vertical element 62 or 63 has a second end portion 32 which has a through hole 34 of a movable holding rod 71.
  • Figure 16 shows the variation curves of the resisting force F for a section 35 lamella constant and for the different configurations of Figures 11 to 14.
  • Figure 17 shows the variation curves of the resisting force F for a sectioned lamella 39 varying in stages by increasing.
  • the through hole 34 of the holding rod mobile 71 belonging to a pyrotechnic actuator 70 has a circular part adjusted with the movable holding rod 71, said circular part extending in the direction of sliding by a 76 narrower oblong hole intended to receive a throttle 73 formed in the retaining rod mobile 71 to block its position in shock.
  • the absorption assembly 50 comprises three absorption elements: a central absorption element 51, and two lateral absorption elements 52 and 53.
  • Each first end 31 is connected to a common base 54 provided with two holes 33 each receiving a fixed holding element or fixing screw 72 in a corresponding hole 26 formed in the connection element 23 of the mobile support element 9.
  • the second end 32 of the central absorption element 51 has a through hole 34 of a movable holding rod 71 along its axis and belonging to a pyrotechnic actuator 70.
  • the second end 32 of each lateral absorption element 52, 53 has a through hole 33 of a fixed holding rod 72.
  • the mobile support element 9 of the column in shock moves parallel by relative to the steering axis 3.
  • the pyrotechnic actuator 70 fixed on the fixed support element 8 by a fixing element 75 remains engaged or may disengage depending on the different parameters previously mentioned, so that deform the entire deformation element or only a part.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Steering Controls (AREA)
  • Air Bags (AREA)
  • Vibration Dampers (AREA)
EP04291130A 2003-05-19 2004-05-03 Modulierbare Kraftfahrzeug-Lenksäulen-Energieabsorptionseinrichtung mit pyrotechnischer Auslösung Expired - Lifetime EP1479593B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0306000 2003-05-19
FR0306000A FR2855140B1 (fr) 2003-05-19 2003-05-19 Dispositif d'absorption modulable d'energie a charges pyrotechniques d'une colonne de direction de vehicule automobile

Publications (2)

Publication Number Publication Date
EP1479593A1 true EP1479593A1 (de) 2004-11-24
EP1479593B1 EP1479593B1 (de) 2008-02-27

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ID=33041996

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EP04291130A Expired - Lifetime EP1479593B1 (de) 2003-05-19 2004-05-03 Modulierbare Kraftfahrzeug-Lenksäulen-Energieabsorptionseinrichtung mit pyrotechnischer Auslösung

Country Status (5)

Country Link
US (1) US7188867B2 (de)
EP (1) EP1479593B1 (de)
AT (1) ATE387369T1 (de)
DE (1) DE602004012021T2 (de)
FR (1) FR2855140B1 (de)

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EP1612122A3 (de) * 2004-06-28 2007-08-08 Aisin Seiki Kabushiki Kaisha Energie aufzehrende Lenksäule
EP1916175A2 (de) * 2006-10-26 2008-04-30 Delphi Technologies, Inc. Lenksäulenanordnung mit aktiver Energieabsorptionsvorrichtung
EP1975037A3 (de) * 2007-03-30 2012-06-20 JTEKT Corporation Energie absorbierende Lenksäulenbefestigung
WO2012079096A1 (de) * 2010-12-15 2012-06-21 Thyssenkrupp Presta Aktiengesellschaft Lenksäule für ein kraftfahrzeug
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US8689659B2 (en) 2009-02-19 2014-04-08 Thyssenkrupp Presta Aktiengesellschaft Steering column for a motor vehicle
CN107351908A (zh) * 2017-07-12 2017-11-17 安徽江淮汽车集团股份有限公司 一种转向管柱溃缩滑移结构
CN108367772A (zh) * 2015-12-16 2018-08-03 蒂森克虏伯普利斯坦股份公司 具有能量吸收装置的用于机动车辆的可调节式转向柱
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FR3083753A1 (fr) * 2018-07-10 2020-01-17 Psa Automobiles Sa Dispositif de guidage de siege de vehicule avec element deformable

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DE102016210833A1 (de) * 2016-06-17 2017-12-21 Thyssenkrupp Ag Lenksäule für ein Kraftfahrzeug
DE102016214709B4 (de) * 2016-08-09 2020-12-31 Thyssenkrupp Ag Lenksäule für ein Kraftfahrzeug
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DE102016220531A1 (de) 2016-10-19 2018-04-19 Thyssenkrupp Ag Lenksäule mit adaptiver Energieabsorptionsvorrichtung für ein Kraftfahrzeug
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DE102018124929A1 (de) 2018-10-09 2020-04-09 Bayerische Motoren Werke Aktiengesellschaft Fahrzeugsitzkonsole
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US5755461A (en) * 1997-02-11 1998-05-26 Chrysler Corporation Energy absorbing device for a steering column
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DE19961016A1 (de) * 1999-12-17 2001-08-30 Volkswagen Ag Lenksäule
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EP1612122A3 (de) * 2004-06-28 2007-08-08 Aisin Seiki Kabushiki Kaisha Energie aufzehrende Lenksäule
US7422239B2 (en) 2004-06-28 2008-09-09 Aisin Seiki Kabushiki Kaisha Energy absorbing steering apparatus
EP1916175A2 (de) * 2006-10-26 2008-04-30 Delphi Technologies, Inc. Lenksäulenanordnung mit aktiver Energieabsorptionsvorrichtung
EP1916175A3 (de) * 2006-10-26 2012-05-30 GM Global Technology Operations LLC Lenksäulenanordnung mit aktiver Energieabsorptionsvorrichtung
EP1975037A3 (de) * 2007-03-30 2012-06-20 JTEKT Corporation Energie absorbierende Lenksäulenbefestigung
US8689659B2 (en) 2009-02-19 2014-04-08 Thyssenkrupp Presta Aktiengesellschaft Steering column for a motor vehicle
WO2012079096A1 (de) * 2010-12-15 2012-06-21 Thyssenkrupp Presta Aktiengesellschaft Lenksäule für ein kraftfahrzeug
US9233707B2 (en) 2010-12-15 2016-01-12 Thyssenkrupp Presta Aktiengesellschaft Steering column for a motor vehicle
DE102012100626B3 (de) * 2012-01-25 2013-02-21 Thyssenkrupp Presta Aktiengesellschaft Lenksäule für ein Kraftfahrzeug
WO2013110305A1 (de) 2012-01-25 2013-08-01 Thyssenkrupp Presta Aktiengesellschaft Lenksäule für ein kraftfahrzeug
CN108367772A (zh) * 2015-12-16 2018-08-03 蒂森克虏伯普利斯坦股份公司 具有能量吸收装置的用于机动车辆的可调节式转向柱
US10717458B2 (en) 2015-12-16 2020-07-21 Thyssenkrupp Presta Ag Adjustable steering column for motor vehicles, having an energy absorption device
CN107351908A (zh) * 2017-07-12 2017-11-17 安徽江淮汽车集团股份有限公司 一种转向管柱溃缩滑移结构
US20190100230A1 (en) * 2017-09-29 2019-04-04 Steering Solutions Ip Holding Corporation Buckling control assembly for a steering column energy absorption strap assembly
US10471981B2 (en) * 2017-09-29 2019-11-12 Steering Solutions Ip Holding Corporation Buckling control assembly for a steering column energy absorption strap assembly
FR3083753A1 (fr) * 2018-07-10 2020-01-17 Psa Automobiles Sa Dispositif de guidage de siege de vehicule avec element deformable

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US20040232685A1 (en) 2004-11-25
DE602004012021T2 (de) 2009-03-19
ATE387369T1 (de) 2008-03-15
EP1479593B1 (de) 2008-02-27
DE602004012021D1 (de) 2008-04-10
US7188867B2 (en) 2007-03-13
FR2855140B1 (fr) 2006-05-26

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